118. We denote the mass of the car as Mand that of the sumo wrestler as m. Let the initial velocity of the sumo wrestler be v0> 0 and the final velocity of the car be v. We apply the momentum conservation law. (a) From mv0= (M + m)vwe getvmvMm=+=+=02422140242054(..kg)(5.3 m / s)kgkgm/s (b) Since vrel
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